I don't know there is no bulldoze button

bulldoze = demolish, knockdown, flatten (verb)

They are going to bulldoze the the old houses in the morning.

bulldoze = force one's way(verb)

The policeman bulldozed his way through the crowd.

You destroy something

It means if you have a place on that property on it already, and you bulldoze it, you can re build on that property. You wont have the place that you bulldozed, but if you rebuild on it, you have another place.

You can't undo what you already bulldozed.